Heel-trimming machine



-` N0 Model.) f

C. W. GLIDDEN. HEEL TRIMMING MAGHINB.

Patented Aug. 27 1889,

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e UNITED STATES PATENT OFFICE.V

CHARLES w. CLIDDEN, CE LYNN, ASSICNoR To JAMES W. ERooKS, TRUSTEE,

CE CAMBRIDGE, MASSACHUSETTS. j

HEer-rmlvuvrlNe MACHINE.

SPECIFICATION forming part of Letters Patent N o. 410,086, dated August 27, 1889.`

Application fil-ed June 2, 1888. Serial No. 275,879. (Nomodel.) l

To ail whom it may concern:

Be it known that I, CHARLES W. GLTDDEN,

of Lynn, in the county of Essex and State of` Massachusetts, have invented an Improve` ment in Heel-TrimmingMachines, of which` the following description, in connection with the accompanying drawings, is a specification,

like letters on the drawings representinglike parts.

In other heel-trimming machines prior to theinvention herein to be described,the .rand

orV counter guard has had imparted to it a lateral and longitudinal movement with relation to a rotating molded cutter to thus -uncover more or less'of the cutting-edges of horizontal movement, or a movement in the direction of the length of the shaft to which the cutter is attached, when the edges of the blades are being uncovered, as when the cutter is acting about the rear Side of the heel.

My invention consists, in a heel-trimming machine, in the combination, With a carriage and its rand or counter guard to enterarandcrease, of a rotating cutter and tread-guard, the latter with the rotating cutter having a motion toward and from the rand or counter guard in the direction of the length of the shaft of the rotating cutter, substantially as will be described; also, in a heel-trimming machine, a rotating cutter and a rand or counter guard, combined with a rest for the edge of a heel, the said rest being movable substantially at right angles to the axis of rotation ofthe cutter-shaftto ena# ble the heel to be moved in a substantially Straight line as the cutter acts to trim the sides of the heel, substantially as will be described; also, in a heel-trimmingmachine, a rotatin g cutter, a tread-guard, a carriage, its rand or counter guard, and a guide-plate for the said carriage, combined with intermediate con- Other features of my invention will be described, and pointed outin the claims at the end of this specification.

Figure l in front elevation represents a heeltrimming machine embodying my invention,

the base or foot of the frame and its attached 6o parts being omitted; Fig.` 2, a left-handend elevation ofthe machine shown in Fig. 1. Fig.

3 is a top or plan view of Fig. 1. Fig. t isa detail'to be described. Fig. 5 is a partial section below the line fr Fig. 2; andFig. 6 l65 is a detail in the line Fig. 5.

The frame-work A,` ot' suitable-shape to sustain the working parts, has pivotedadf justable bearings A A2, which receive the main rotating shaft A3,*to thefront end of 7o which is attached, in usual manner, a rotary molded cutter (marked A4) of usual construction, it havinga series of adjustable attached blades.

At the rear side of the head of the cutter 75. i

the shaft A3 is surrounded by the tubular lhub of a tread-guardA5, loosely mounted on the said shaft, the said hubibeing provided (see Fig. 3) with a recess, in Whichenters a collar 2, fast on the said shaft A3, the said col# So larat 'its-side next' the head of the` cutter being acted upon by a plate or washer 3, at-

Y tached to the hub of the tread-guard by suitA able screws, whereb y the tread-guard is moved bodily'winl nl@ ShaftAin its longitudinal S5 motions in its-bearings.A The hub ofthe treadguard has projecting from it diametrically pins or projections 4, which are `engaged by the front end of alever B, (shown in detail,

Fig. 4,) the rear end of the said lever (it hav 9o ing two arms) surrounding` journalsof a col,- lar a., fast on a rod a', the other end of the rod being jointed to a carrier or carriage C, herein shown as containing several gears, to

be described. Screws 5 keep the lever B on 95` the journals of the collar a. j u." e, The carriage has at its upper and lower sides two like rollers or other` studs 6 and?,

which enter, respectively, the slots Smfand of nections whereby the pressure of the tread of a rigid guide-frame b, the Said frame bemgroo 5o the heel against the tread-guard moves` the pivoted at 10 to an adjustable head 12, made movable at right angles to the axis of the shaft. A3 on a shoe 13, dovetailed in crosssection, the said shoe having a dovetailed foot 14, which enters a correspondinglyshaped groove in the guideway 15, fixed to the frame-work. The frame-work. has connected to it in an adjustable manner a stop 16, (see Fig. 3,) made as a screw, against which bears the inner end of the foot 14, the said stop being made adjustable into any desired position, so that when the head is removed to grind the cutters, as it may be by releasing the set-screw 17, the said shoe and head when Yagain applied to the machine may readily find its true or the same posit-ion that itA occupied when removed from the machine, this being a very essential feature and insuring a ready and correct positioning of the cutters. The guide-frame is provided near its pivotal point 10 with an adjusting-screw 18, rotation of which in one or the other direction enables the position of the guide-frame to be adjusted. The guide-frame may be turned or swung aside on its pivots 10 when it is desired to expose the cutter-blades for grinding orotherwise. The slot 8 is somewhat inclined from the axis of the shaft A3, and the slot 9 is nearly at right angles thereto. Vhen .the carriage is pushed by a movement of the rod a in the direction of lthe arrow thereon, Fig. 3, the rolls 6 and 7, acting in the slots 8 and 9, tip the carriage C and cause the lip 19 of the rand or counter guard d, attached to the said carriage, to travel in a substantially right line, or at right angles to the axis of rotation of the cutter A4, the said lip not, however,

leaving the usual rand-crease. VThe lever B f is slotted at 2O and hasrits fulcrum on a stud 21, projected from one side of a block 22, having a dovetailed foot, which is fitted adjustj ably in a corresponding groove of a guideblock 23, the said stud having on it a pivotblock 24, which is grooved at its opposite sides to leave flanges, between which are placed the two arms of the lever B.

In operation the tread of the heel rests against the beveled face of the tread-guard A5,.

f and the lip 19 tof the rand or counterguard d rests in the usual rand-crease. In this condition, as the rear part of the heel is brought against the cutter A4, the tread of the heel acts to force the tread-guard back away from the lip of the counter-guard, and in so doing rocks the lever B on its fulcrum 21, and causes shaft-as, for instance, I may use a coiled-wire shaft. The inner end of the exible shaft carries a gear e, which by an intermediate gear e7 engages and rotates a gear es, fast on the rotating shaft e?, to which is att-ached the rand-cutter f, which in practice may be like the rand-cutter more fully shown and described in my application, Serial No. 275,880. The spring el@ normally acts to keep the treadguard pressed toward the rand-guard. The edge of the heel being trimmed is supported upon a rest g, (best shown in Figs. 2 and 3,) the said rest having an inclined or curved face and made adjustable by a slot and screw g horizontally in a guide g2, which is slotted or otherwise shaped to slide vertically on a second guide g3, herein shown as an arm depending from the hub of the tread-guard. (See Fig. 1.) The block g2 has jointed to it an adjustable or two-part rod g4, extended at its lower end through a guide g5, and having, as herein shown, a roller or other stud gf, which enters a cam slot or groove of a lifting device Q7, (shown as a lever fast on a rock-shaftg8,) having fast on it a treadle gg, which may be actuated by the foot of the operator; but in practice I prefer toY actuate the lever g7 for moving the rod automatically. To do this I have pivoted to the lever g7 at 30 a slide-bar 31, containing a pattern-cam 32, of substantially horseshoe shape, the cam receiving in it a stud 33 of a disk or arm at the end of a shaft 34, (see Fig. 5,) having splined upon it loosely a sleeve 35, provided at one end with a seriesY of teeth and at its other end with a collar 36, grooved annularly to receive a pin or proj ection 37 at the end of an elbow-lever 38, pivoted at 39, the opposite end of the said elbow-lever having jointed to it a rod 40, which is in turn jointed to the upper end of an arm 4,1, connected to the rock-shaft g8, the movement of the lever 38 causing the sleeve 35 to slide upon the shaft 34 and place the teeth of the sleeve in engagement with the toothed hub of a toothed gear 42, normally loose on the shaft 34; but when a heel has been trimmed the slide-bar 31, through the rock-shaft g8, causes the sleeve 35 to be moved on the shaft 34 in a direction to disengage its teeth from the constantly-moving toothed gear 42. The toothed gear 42 is engaged and rotated by a toothed pinion 43 (shownY by dot-ted lines, Fig. 2) at the hub of a pulley 44, over which is extended a belt 45, driven from a small pulley 46 on the main driving-shaft 47, provided with usual driving-pulleys and with a pulley 48, over which is abelt 49, which, on pulley 50, rotates shaft A.

The shaft 34, at one side of the collar which forms a stop for the toothed gear 42, has attached to it a small drum, upon which is wound a strap 52, having attached to it a spring 53, the strap being wound upon said drum when the shaft 34 is being rotated and the heel is being trimmed; but as soon as the second side of the heel has been trimmed to the breast thereof and the sleeve has been IOO VIOS

IIO

moved vto free the toothed wheel 42 then the spring assumes control of the shaft 34 and rotates the latter back to place the crank-pin in its lnormal or starting position for the trimming of a heel, the normal position being that shown in Fig. A2. While the heel is being trimmed and the teeth of the sleeve 35 are in engagement with the teeth at the hub of the wheel 42,'a locking-dog 54 engages the elbow-lever 38 (see Figs. 5 and and aids in holding the teeth of the sleeve in engagement with the teeth of the toothed wheel; but as soon as the heel has been trimmed a rib or projection on the sleeve strikes the dog, lifts the same, and releases the elbowlever, so that the spring 56, connected therewith and with a portion of the frame, (see Fig. 5,) quickly moves the sleeve to disconnect it from the toothed wheel. The shape of the cam-groove in the lever 97 is such that when the sides ofthe heel are being trimmed the rod and rest will be raised, thus lifting the shoe in a substantially straight line to enable the cutter to trim the straight side of the heel. The rod will be lifted gradually while the cutter cuts from ythe breast of the heel to the commencement of the approximately-circular part thereof, when the rest will be held stationary, and after the approximately-circular part of t-he heel has been trimmed the rod will be fully lifted to coinplete the upward movement of the rest, the cutter then acting upon the second side of the heel to the breast. By disconnecting the bar 31 from t-he lever g7 the operator may lift the rod and rest by his foot on the treadle gf.

I have herein shown a rotary heel-cutter, a carriage, a support therefor, a rand-guardattached to the said carriage and shaped to project over the heel-cutter, a rotary rand-cutter,

and a tread-guard; but I do not herein claim` any one of the said devices or their combination one or more with the other, broadly, as the same form rthe subject-matter of several claims in my application, Serial No. 275,880, iiled June 2, 1888.

I claiml. In a heel-trimming machine, a rotating longitudinal movable shaft, its attached rotary cutter, and. tread-guard, combined with a rand or counter guard to enter the randcrease, and a freely-movable carriage to which the rand-guard is attached, and a guide for the said carriage, the said rotary shaft, its cutter, and tread-guard being movable longitudinally in unison toward and from the rand or counter guard, the rand or counter guard being also free to move in a direction substantially at right angles to the axis of rotation of the said rotating shaft, for the purpose specitied.

2. In a heel-trimming machine, a rotating longitudinal movable shaft, itsattached rotary cutter, and tread-guard, combined with a rand or counter guard to enter the randcrease, a freely-movable carriage to which the rand or counter guard is attached, and a slotted guide therefor to effect the tipping of the said carriage as it is moved in a direction substantially at right angles to the axis of rotation of the said rotating shaft, substantially as set forth.

3. In a heel-trimming machine, a movable carriage, as C, and its attached rand or counter guard to enter the rand-crease, the rotating shaft, its attached cutter, and the treadguard, combined with connections between the Ytread-guard and carriage, whereby the longitudinal movement of the cutter and tread-guard in unison toward and from the rand or counter guard is accompanied by a movement of the said rand or counter guard in a direction substantially at right angles to the said shaft, substantially as described.

4. In a heel-trimming machine, a rotating cutter, an independent freely-movable carriage, as C, a rand or counter guard, combined with a movable rest, as g, and a guide therefor, whereby the said rest, while-the cutter acts to trim the straight sides of the heel, may be lnoved substantially at right angles to the rotation of the cutter, substantially as described.

5. In a heel-trimming machine, a rotating cutter, a tread-guard, a tippingl carriage, its rand or counter guard, and the guide-plate b for the said carriage, combined with connections intermediate the said blade and shaft, whereby the pressure of the tread of the heel against the tread-guard moves the latter, together with the rotating cutter and its shaft, longitudinally, and through the said connection moves the said carriage at right angles to the said shaft, substantially as described.`

6. In a heel-trimming machine, a rotating longitudinal movable shaft, its attached rotary cutter, and tread-guard, combined with a IOO recessed rand-guard to enter the rand-crease,

and a rotating randfcutter having its blades engaged with a rotating cutter bet-Ween `its blades, a freely-movable carriage to support the said rand-guard and rand-cutter, and a guide for the carriage, the said shaft, its cutter, and tread-guard being movable lon gitudi `nally in unison toward and from the rand or counter guard, the rand or counter guard being also free to move in a direction substantially at right angles to the axis of rot-ation of the said rotating shaft, for the purpose specified.

'7. In a heel-trimming machine, the rotating shaft, its attached cutter, its attached gear,

the carriage, rand or counter guard, and randcutter, combined with the gear e6 and with intermediate gearing and" iiexible shafting, to operate substantially as described.

` 8. In a heel-trimming machine, the rotating cutter, a tread-guard or guide A5, combined with the rest g, a cam, andmea'ns toV automatically operate thefsaid rest, as described, while the sides 0f the heel are being trimmed, the rest being substantially stationary while the rear part of the heel is being trimmed,

substantially as described.

9. In a heel-trimn'ling machine, the edgerest g for the shoe the heel of Which is to be trimmed, and thek cam for moving the said rest vertically, combined with a treadle to operate the said cam, snbstantiall y as described.

10. In a heel-trim ming machine, the rest for the shoe the heel of which is to be trimmed, the cam for moving the said rest vertically, and the bar 31, attached'thereto and provided With the cam-groove, combined with a shaft 34, having a crank-pin or projection to actnate the said slide-bar, and with means to rotate the said shaft 34: or leave it at rest, substantially as described.

Il. In a heel-tri1nming machine, the shaft 34, its attached crank-pin or projection 33, the slide-bar actuated thereby, the cam Q7, connected to the slide-bar, the sleeve 35, splined looselynpon the shaft 3l, and the gear 2, loose on the shaft 34 and provided with teeth at its hub to be engaged by the teeth of the sleeve, combined with means to rotate the gear 4t2, the latter rotating the shaft 3l when the teeth of the sleeve are in engagement with the teeth at the hul) of the said gear, substantially as described.

l2. In a heel-trimming machine, the shaft 34E, its attached crank-pin or projection 33, the slide-bar actuated thereby, the cam Q7, connected to the slide-bar, the sleeve 35, splined loosely upon the shaft 3%, and the gear 42, loose on the shaft 3l and provided With teeth at its hub to be engaged bythe teeth of the sleeve, combined with means to rotate the gear 42, the latter rotating the shaft 34 when the teeth of the sleeve are in engagement With the teeth at the hub of the said gear, and with means to automatically reverse the direction of rotation of the shaft 34 when the sleeve is disengaged from the said toothed Wheel 4-2, substantially as described.

In testimon y whereof I have signed my n ame to this specification in the presence of two subscribing witnesses.

CHARLES \V. GLIDDEN.

fitnessesz GEO. W. IIAMMATT, Il. P. FAIRFIELD. 

